Antifreeze question

Mposta · 09-21-2021, 05:18 PM

So I noticed my reservoir was a tad low, so swung by the dealer and picked up a quart to top off. Rep said it was already pre-mixed and gtg. I trusted but did not verify. So here I am pouring non diluted coolant in, 'twas about a 25 ozs (just shy of the whole qt) that I realized it looked thick so I stopped and inspected to see that in fact it was not diluted. Question is: do you think it's ok? Or should I flush and re do? Thanks for any advice

Billfitz · 09-21-2021, 09:26 PM

A quart of straight anti-freeze won't upset anything. A gallon would be a different story.

capt_slow · 09-21-2021, 11:47 PM

All you are doing is just increasing the concentration of anti-freeze in the system. BMW already permits higher concentrations up to 60/40, so you're fine.

If you added water, it would be a different story as you would be diluting the anti-freeze concentration.

09-21-2021, 05:18 PM	#1
Mposta New Member 2 Rep 28 Posts Drives: BMW 328i Join Date: Jun 2021 Location: Albuquerque iTrader: (0)	So I noticed my reservoir was a tad low, so swung by the dealer and picked up a quart to top off. Rep said it was already pre-mixed and gtg. I trusted but did not verify. So here I am pouring non diluted coolant in, 'twas about a 25 ozs (just shy of the whole qt) that I realized it looked thick so I stopped and inspected to see that in fact it was not diluted. Question is: do you think it's ok? Or should I flush and re do? Thanks for any advice
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09-21-2021, 09:26 PM	#2
Billfitz Lieutenant General 8243 Rep 16,082 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	A quart of straight anti-freeze won't upset anything. A gallon would be a different story.
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09-21-2021, 11:47 PM	#3
capt_slow Captain 556 Rep 906 Posts Drives: 2017 F31 328d Join Date: Oct 2013 Location: SoCal iTrader: (1) Garage List 2015 VW Golf SportW ... [0.00] 2017 BMW 328d xDriv ... [10.00] 2020 BMW i3 Rex [0.00]	All you are doing is just increasing the concentration of anti-freeze in the system. BMW already permits higher concentrations up to 60/40, so you're fine. If you added water, it would be a different story as you would be diluting the anti-freeze concentration. __________________ 2017 328d xDrive Sports Wagon: Estoril Blue, Black Sensatec, M-Sport Pkg 2020 i3 Rex: Capparis White, Giga World
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